Petri dish



FIG. 1 is a top view of a petri dish showing my new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a cross-sectional side view taken along the line 4—4 as shown in FIG. 1 thereof;

FIG. 5 is a top isometric view thereof;

FIG. 6 is a bottom isometric view thereof; and,

FIG. 7 is an isometric view of the two separated components thereof.

The portions shown in broken lines are for illustrative purposes only, and form no part of the claimed design. 

The ornamental design for petri dish, as shown and described. 